Consider a computing cluster consisting of two nodes running a databasedescribe two ways in which the cluster software can manage access to the data on the diskdiscuss the benefits and detriments of?

Answer 1

Consider the following two alternatives: asymmetric clustering and

parallel clustering.With asymmetric clustering, one host runs the

database application with the other host simply monitoring it. If the server

fails, the monitoring host becomes the active server. This is appropriate

for providing redundancy. However, it does not utilize the potential

processing power of both hosts.With parallel clustering, the database

application can run in parallel on both hosts. The difficulty implementing

parallel clustering is providing some form of distributed locking

mechanism for files on the shared disk

Answer 2

Consider the following two alternatives: asymmetric clustering andparallel clustering.With asymmetric clustering, one host runs thedatabase application with the other host simply monitoring it. If the serverfails, the monitoring host becomes the active server. This is appropriatefor providing redundancy. However, it does not utilize the potentialprocessing power of both hosts.With parallel clustering, the databaseapplication can run in parallel on both hosts. The difficulty implementingparallel clustering is providing some form of distributed lockingmechanism for files on the shared disk